Airflow up to 159 cfm @ 0.4" PS serves 2 to 5 bedroom homes Side port connections Compatible with Fantech's low-voltage controls Application Fantech's side port connection HRV for budget conscious house projects. The SHR 150 is ideal for projects that demand a higher efficiency, the unit is designed for higher static pressure applications.Website Brochures_Info\99213-427614 SHR150 Spec Sheet EN.pdf